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2026-07-29 - 06:40
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Characteristics of the 20 highest latencies:
System rack6slot0.osadl.org (updated Wed Jul 29, 2026 01:01:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
363099276271,3cyclictest18656-21kworker/u81:2+events_unbound22:42:1212
363099276271,3cyclictest18656-21kworker/u81:2+events_unbound22:42:1212
368899210187,12cyclictest0-21swapper/3820:15:2632
368899210187,12cyclictest0-21swapper/3820:15:2632
368599210200,7cyclictest0-21swapper/3520:20:1229
368599210200,7cyclictest0-21swapper/3520:20:1129
367699202194,6cyclictest0-21swapper/2721:30:0220
367699202194,6cyclictest0-21swapper/2721:30:0120
366599202199,2cyclictest0-21swapper/1820:35:2110
366599202199,2cyclictest0-21swapper/1820:35:2110
368899199191,6cyclictest0-21swapper/3819:40:5232
368899199191,6cyclictest0-21swapper/3819:40:5132
363999199169,27cyclictest18656-21kworker/u81:2+events_unbound23:16:1136
363999199169,27cyclictest18656-21kworker/u81:2+events_unbound23:16:1136
363999199169,27cyclictest18656-21kworker/u81:2+events_unbound23:16:1036
367699197188,7cyclictest0-21swapper/2721:30:3720
367699197188,7cyclictest0-21swapper/2721:30:3620
368299195189,5cyclictest0-21swapper/3300:05:2227
368299195189,5cyclictest0-21swapper/3300:05:2227
368899193181,5cyclictest0-21swapper/3821:28:0132
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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